How to Manage Pests

Pests in Gardens and Landscapes

Fall webworm—Hyphantria cunea

Larvae of the fall webworm are pale brown or gray caterpillars with long white hairs arising from black
and orange spots. There is only one generation per year.

Damage

Larvae feed in webbed colonies on ends of branches. Caterpillars are found eating foliage between the
leaf veins and forming silken tents on host trees. Damage occurs in mid to late summer.

Solutions

On small trees, cut out and destroy infested twigs. If necessary, Bacillus
thuringiensis or spinosad can be
applied to individual trees with a high-pressure spray when
evidence of caterpillars is first observed.

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